Cap nut for a trip cock device including a detent arrangement fo

Details Cap nut for a trip cock device including a detent arrangement fo Cap nut for a trip cock device including a detent arrangement fo

1981-09-24

1983-09-20

Walton, George L.

Fluid handling

With indicator, register, recorder, alarm or inspection means

Position or extent of motion indicator

74527, 74531, 246190, 251 32, 251 74, 251251, 251297, F16K 3700, F16K 3100, F16K 31524

Patent

active

044049870

ABSTRACT:
A trip cock device including a pilot valve actuable by a trip lever, when the train on which the trip cock is mounted passes over a trip arm secured to the track, for causing a release valve in the trip cock to be opened and opening brake pipe pressure to atmosphere, at an emergency rate, for effecting an emergency brake application. Axial displacement of the pilot valve, along with a stem thereon, causes a groove in the stem to be engaged by a detent member for securing the trip cock in open disposition until the detent is released manually.

REFERENCES:
patent: 27801 (1860-04-01), Higginbotham
patent: 1065659 (1913-06-01), Bohannon
patent: 1143669 (1915-06-01), Watrous
patent: 1305738 (1919-06-01), Nevens
patent: 2007569 (1935-07-01), Hoke
patent: 2121552 (1938-06-01), Stevens
patent: 2171178 (1939-08-01), Johnson et al.
patent: 3275022 (1966-09-01), Kobayashi et al.
patent: 3674237 (1972-07-01), Heyer et al.
patent: 4293118 (1981-10-01), Olson et al.
Westinghouse Air Brake Division, "D-1 Trip Cocks with Shear Bolt," Nov. 1979, pp. 1-9.

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